Anti-demagnetization new energy permanent magnet motor

Abstract

The invention relates to the technical field of motors, in particular to an anti-demagnetization new energy permanent magnet motor, which comprises a lubricating oil box, a motor shell and an insulating cylinder, the insulating cylinder is fixedly mounted in the motor shell, a stator core and a first magnet are alternately mounted in the insulating cylinder, an armature winding is fixedly mounted in the stator core, and the armature winding is fixedly mounted in the motor shell. A rotor iron core is rotationally installed in the center of the interior of the insulating cylinder, a rotating shaft is installed in the rotor iron core in a penetrating mode, and lubricating oil rollers are rotationally installed in the lubricating oil box. The widths of the two sides of the first magnet are reduced, so that the risk of local irreversible demagnetization of the first magnet in the magnetic flux switching permanent magnet motor is suppressed, the risk of irreversible demagnetization of the first magnet in the permanent magnet motor is reduced, and the output torque and the output power of the motor are kept in the long-term use process of the motor; meanwhile, the width of the two sides of the first magnet is reduced, the use amount of the first magnet is reduced, and the output capacity of the motor is kept on the basis of reducing the manufacturing cost of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a new energy permanent magnet motor with anti-demagnetization function. Background Art

[0002] With the continuous improvement of the performance of permanent magnet materials and the development of motor technology, permanent magnet motors have been widely used in various fields of the national economy. Permanent magnet DC motors are DC motors that use permanent magnets to establish magnetic fields. Permanent magnet motors have the advantages of small size, high power density, high efficiency, high output torque and reliable operation. They have been widely used in many fields, especially in the automotive industry. Permanent magnet synchronous motors play an important role in the development of new energy vehicles. Among them, the "permanent magnet motor for new energy vehicles" disclosed by application number "CN112564417A" has solved the various disadvantages of being unable to fully take away the heat generated by the motor under high load or high speed conditions. After further searching, it was found that the "permanent magnet motor for new energy vehicles" disclosed by application number "CN111525740B" has effectively solved the technical disadvantages of the existing permanent magnet motors that generate a lot of heat when in use, heat exchange is difficult, and the temperature rise caused may cause irreversible demagnetization of the permanent magnets, limit the output of the motor, and increase safety hazards.

[0003] However, in actual use, permanent magnet motors with similar structures still have many defects, such as: no anti-demagnetization function, which causes the motor output torque and output power to decrease during long-term use, affecting the transmission effect of the motor, so it is necessary to design a new energy permanent magnet motor with anti-demagnetization. Summary of the invention

[0004] The purpose of the present invention is to provide a new energy permanent magnet motor with anti-demagnetization function to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a demagnetization-proof new energy permanent magnet motor, comprising a lubricating oil box, a motor housing and an insulating cylinder, an insulating cylinder fixedly installed inside the motor housing, a stator core and a first magnet alternately installed inside the insulating cylinder, an armature winding fixedly installed inside the stator core, a rotor core rotatably installed inside the insulating cylinder, a rotating shaft penetrated inside the rotor core, a front cover is bolted to one end of the motor housing, a rear cover is fixedly installed on the other end of the motor housing, a lubricating oil box is embedded in the front cover, an oil-lubricating roller is rotatably installed inside the lubricating oil box, bearing sleeves are embedded on both sides of the lubricating oil box, and a first magnet is arranged between the stator cores.

[0006] The first magnet is clamped and installed by two sets of armature windings, so that the air gap side of the first magnet can be reduced. The reduced width on both sides of the first magnet can be used to avoid the problem that the magnetic flux density of the first magnet tends to zero on the air gap side, thereby suppressing the risk of local irreversible demagnetization of the first magnet in the flux switching permanent magnet motor, solving the problem that the first magnet is prone to demagnetization on the air gap side, reducing the risk of irreversible demagnetization of the first magnet in the permanent magnet motor, adding an anti-demagnetization function, avoiding the decrease in the output torque and output power of the motor during long-term use, and ensuring the transmission effect of the motor. At the same time, the reduced width on both sides of the first magnet also reduces the amount of the first magnet used, maintaining the output capacity of the motor on the basis of reducing the motor manufacturing cost, thereby improving the motor utilization rate.

[0007] Preferably, a mounting shaft disc is fixedly installed inside the front cover, and the interior of the mounting shaft disc is movably connected to the rotating shaft through a bearing. The mounting shaft disc can limit the rotation position of the rotating shaft, and the bearing inside the mounting shaft disc can reduce the friction of the rotating shaft.

[0008] Preferably, a liquid level window is embedded in the front of the lubricating oil box, and a sealing plug is threadedly installed on the front of the lubricating oil box. The lubricating oil inside the lubricating oil box can be observed through the liquid level window, and the lubricating oil can be injected into the lubricating oil box by screwing out the sealing plug, so as to replenish the lubricating oil inside the lubricating oil box.

[0009] Preferably, one end of the rotating shaft is provided with equidistant snap-in grooves, and a tapered shaft is fixedly mounted on the other end of the rotating shaft. The rotating shaft is connected to an external device via the snap-in groove, which is convenient for quick assembly of the motor, and one end of the rotating shaft is limited by the tapered design of the tapered shaft in cooperation with the tapered limiting cover, so that the friction resistance encountered by the rotating shaft during rotation is reduced, and the wear on one end of the rotating shaft during rotation can be reduced, thereby improving the durability of the rotating shaft. Preferably, heat sinks are equidistantly mounted on the outside of the motor housing, and mounting brackets are fixedly mounted on both sides of the bottom of the motor housing. The heat sinks can increase the heat dissipation area of ​​the motor housing, improve the heat dissipation efficiency of the motor housing, and the mounting bracket facilitates the installation of the motor housing, thereby ensuring the stability of the installation of the motor housing.

[0010] Preferably, a heat dissipation hole plate is fixedly installed inside the rear cover, and through holes are evenly opened inside the heat dissipation hole plate. The wind force generated by the cooling fan can be transported to the inside of the motor housing through the through holes inside the heat dissipation hole plate, so that the inside of the motor housing can be cooled.

[0011] Preferably, a cooling fan is installed on the outer side of the rotating shaft through a slot, and a clamping plate is fixedly installed inside the cooling fan. The cooling fan is clamped with the slot on the outer side of the rotating shaft through the clamping plate, which facilitates the rapid assembly of the cooling fan.

[0012] Preferably, a conical limiting cover is installed on the inner wall of the rear cover through a carbon ceramic seat, and a heat dissipation window is embedded and installed on the front of the rear cover. The conical limiting cover cooperates with the conical shaft to limit one end of the rotating shaft, so that the friction resistance of the rotating shaft during rotation is reduced, and the heat dissipation window can discharge the hot air extracted by the cooling fan into the device.

[0013] Preferably, a fixed mounting frame is provided inside the motor housing, a shaft rod is inserted and connected in the middle of the fixed mounting frame, a permanent magnet rotor is fixedly connected to the outer side of the shaft rod, the outer side of the permanent magnet rotor is connected to the stator, one end of the shaft rod is fixedly connected to a driving gear column, and the outer side of the driving gear column is meshedly connected to a driven gear column.

[0014] Preferably, one side of the driven gear column is meshedly connected with a transmission gear column, one end of the transmission gear column is provided with a second magnet, an electric roller is provided on the outer side of the second magnet, and a transmission shaft is connected to the middle part of one end of the fixed mounting frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By reducing the width of both sides of the first magnet, the problem of the magnetic flux density of the first magnet tending to zero on the air gap side is avoided, the risk of local irreversible demagnetization of the first magnet in the flux switching permanent magnet motor is suppressed, and the problem of the first magnet being easily demagnetized on the air gap side is solved, so that the risk of irreversible demagnetization of the first magnet in the permanent magnet motor is reduced, so that the motor maintains the output torque and output power during long-term use, and ensures the transmission effect of the motor. At the same time, the reduction in the width of both sides of the first magnet also reduces the amount of the first magnet, and maintains the output capacity of the motor on the basis of reducing the manufacturing cost of the motor.

[0017] 2. The oil roller on the top of the shaft is in contact with the outside of the shaft, which drives the oil roller to rotate during the rotation of the shaft. The rotating oil roller can evenly apply the lubricating oil stored in the lubricating oil box to the outside of the shaft. During the high-speed rotation of the shaft, the lubricating oil on the surface of the shaft can be evenly diffused to the surface of the shaft, thereby achieving the purpose of uniform lubrication and realizing the purpose of self-maintenance of the internal parts of the motor, so that the staff does not need to disassemble the motor for maintenance, thereby reducing the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the local structure of the motor housing of the present invention;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the front cover of the present invention;

[0023] Figure 6 Schematic diagram of the cross-sectional structure of the back cover of the present invention

[0024] Figure 7 It is a schematic diagram of the shaft rod structure of the present invention.

[0025] In the figure: 1, front cover; 101, mounting shaft disc; 2, lubricating oil box; 201, liquid level window; 202, bearing sleeve; 203, oil-lubricating roller; 3, rotating shaft; 301, clamping groove; 302, tapered shaft; 4, motor housing; 401, heat sink; 402, mounting bracket; 5, rear cover; 501, heat dissipation window; 502, cooling fan; 503, heat dissipation hole plate; 504, tapered limit cover; 505, carbon ceramic seat; 6, insulating cylinder; 601, stator core; 602, first magnet; 603, armature winding; 604, rotor core; 7, fixed mounting frame; 701, shaft; 702, permanent magnet rotor; 703, stator; 704, driving gear column; 705, driven gear column; 706, transmission gear column; 707, second magnet; 708, transmission shaft. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0028] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Embodiment 1

[0031] like Figure 1-Figure 7 As shown, a new energy permanent magnet motor with anti-demagnetization proposed by the present invention comprises a lubricating oil box 2, a motor housing 4 and an insulating cylinder 6, the motor housing 4 is fixedly installed with an insulating cylinder 6, the inside of the insulating cylinder 6 is alternately installed with a stator core 601 and a first magnet 602, the inside of the stator core 601 is fixedly installed with an armature winding 603, the inner center of the insulating cylinder 6 is rotatably installed with a rotor core 604, the inside of the rotor core 604 is penetrated by a rotating shaft 3, one end of the rotating shaft 3 is equidistantly provided with a clamping groove 301, the other end of the rotating shaft 3 is fixedly installed with a tapered shaft 302, and one end of the motor housing 4 is fixedly installed with a The front cover 1 and the other end of the motor housing 4 are fixedly installed with a rear cover 5, the inner wall of the rear cover 5 is installed with a conical limit cover 504 through a carbon ceramic seat 505, and a heat dissipation window 501 is embedded in the front of the rear cover 5, a heat dissipation hole plate 503 is fixedly installed inside the rear cover 5, and through holes are evenly opened inside the heat dissipation hole plate 503, a cooling fan 502 is installed on the outer side of the rotating shaft 3 through a slot, a lubricating oil box 2 is embedded in the front cover 1, and an oil-lubricating roller 203 is rotatably installed inside the lubricating oil box 2, bearing sleeves 202 are embedded on both sides of the lubricating oil box 2, and a first magnet 602 is arranged between the stator core 601.

[0032] The working principle of the new energy permanent magnet motor with anti-demagnetization based on the first embodiment is: the rotating shaft 3 is connected to the external device through the clamping groove 301, which is convenient for the motor to be quickly assembled, the stator core 601 can provide a fixed installation position for the first magnet 602, and the first magnet 602 can generate a magnetic field, and the armature winding 603 outside the rotor core 604 is energized to cut the magnetic field of the first magnet 602, thereby driving the rotor core 604 to drive the rotating shaft 3 to rotate at a high speed;

[0033] At the same time, the high-speed rotating shaft 3 drives the cooling fan 502 to rotate and generate wind, and the wind is transmitted to the inside of the motor housing 4 through the internal through-holes of the heat dissipation hole plate 503, so that the inside of the motor housing 4 can be cooled, and the hot air extracted by the cooling fan 502 can be discharged from the inside of the device through the heat dissipation window 501.

[0034] During the rotation of the shaft 3, the conical shaft 302 cooperates with the conical limiting cover 504 to limit one end of the shaft 3, so that the friction resistance of the shaft 3 during rotation is reduced, and the wear of one end of the shaft 3 during rotation can be reduced, thereby improving the durability of the shaft 3;

[0035] The oil roller 203 at the top of the shaft 3 is in contact with the outer side of the shaft 3, so that the oil roller 203 is driven to rotate during the rotation of the shaft 3. The rotating oil roller 203 can evenly apply the lubricating oil stored in the lubricating oil box 2 to the outer side of the shaft 3. During the high-speed rotation of the shaft 3, the lubricating oil on the surface of the shaft 3 can be evenly spread to the surface of the shaft 3, thereby achieving the purpose of evenly applying lubrication and realizing the purpose of self-maintaining the internal parts of the motor, so that the staff does not need to disassemble the motor for maintenance, thereby reducing the workload of the staff;

[0036] By reducing the width on both sides of the first magnet 602, the air gap side of the first magnet 602 can be reduced, thereby avoiding the problem that the magnetic flux density of the first magnet 602 tends to zero in the part close to the air gap side, suppressing the risk of local irreversible demagnetization of the first magnet 602 in the flux switching permanent magnet motor, and avoiding the decrease in the output torque and output power of the motor during long-term use. At the same time, the reduction in the width on both sides of the first magnet 602 also reduces the amount of the first magnet 602 used, thereby maintaining the output capacity of the motor while reducing the manufacturing cost of the motor, thereby improving the utilization rate of the motor.

[0037] Embodiment 2

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the present invention proposes an anti-demagnetization new energy permanent magnet motor. Compared with the first embodiment, this embodiment also includes: a mounting shaft disk 101 is fixedly installed inside the front cover 1, and the interior of the mounting shaft disk 101 is movably connected to the rotating shaft 3 through a bearing member, a liquid level window 201 is embedded in the front of the lubricating oil box 2, and a sealing plug is threadedly installed on the front of the lubricating oil box 2, heat sinks 401 are equidistantly installed on the outside of the motor housing 4, mounting brackets 402 are fixedly installed on both sides of the bottom of the motor housing 4, and a card is fixedly installed inside the cooling fan 502.

[0039] In this embodiment, Figure 2 , Figure 5 As shown, the shaft disc 101 can be installed to limit the rotation position of the shaft 3, and the bearing member inside the shaft disc 101 can be used to reduce the friction of the shaft 3 during rotation; Figure 1 , Figure 5 As shown, the lubricating oil inside the lubricating oil box 2 can be observed through the liquid level window 201, and the lubricating oil can be injected into the lubricating oil box 2 by screwing out the sealing plug, so as to replenish the lubricating oil inside the lubricating oil box 2;

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the heat sink 401 can increase the heat dissipation area of ​​the motor housing 4, improve the heat dissipation efficiency of the motor housing 4, and facilitate the installation of the motor housing 4 by installing the tripod 402, thereby ensuring the stability of the installation of the motor housing 4; Figure 4 and Figure 6 As shown, the cooling fan 502 is engaged with the slot on the outer side of the rotating shaft 3 through a clamping plate, so that the cooling fan 502 is easily assembled.

[0041] A fixed mounting frame 7 is provided inside the motor housing 4, a shaft 701 is inserted and connected in the middle of the fixed mounting frame 7, a permanent magnet rotor 702 is fixedly connected to the outer side of the shaft 701, the outer side of the permanent magnet rotor 702 is connected to the stator 703, one end of the shaft 701 is fixedly connected to a driving gear column 704, and the outer side of the driving gear column 704 is meshedly connected to a driven gear column 705.

[0042] During specific use, the permanent magnet rotor 702 and the stator 703 generate electric energy during high-speed rotation, so that the driving gear column 704 is driven to rotate, and the rotation of the driving gear column 704 drives the driven gear column 705 to rotate, thereby facilitating the rotation of the transmission gear column 706.

[0043] One side of the driven gear column 705 is meshedly connected with a transmission gear column 706, one end of the transmission gear column 706 is provided with a second magnet 707, an electric roller is provided on the outer side of the second magnet 707, and a transmission shaft 708 is connected to the middle of one end of the fixed mounting frame 7.

[0044] During specific use, the rotation of the transmission gear column 706 and the frictional cooperation with the second magnet 707 facilitate the driving of the transmission shaft 708 to rotate, thereby facilitating the generation of a power source to rotate the transmission shaft 708.

[0045] It should be noted that, in this article, the term "comprises", "includes" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0046] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A new energy permanent magnet motor with anti-demagnetization function, comprising a lubricating oil box (2), a motor housing (4) and an insulating cylinder (6), characterized in that: An insulating cylinder (6) is fixedly installed inside the motor housing (4), a stator core (601) and a first magnet (602) are alternately installed inside the insulating cylinder (6), an armature winding (603) is fixedly installed inside the stator core (601), a rotor core (604) is rotatably installed inside the insulating cylinder (6), a rotating shaft (3) is installed through the inside of the rotor core (604), a front cover (1) is installed at one end of the motor housing (4) by means of bolts, a rear cover (5) is fixedly installed at the other end of the motor housing (4), a lubricating oil box (2) is embedded and installed inside the front cover (1), an oil-lubricating roller (203) is rotatably installed inside the lubricating oil box (2), bearing sleeves (202) are embedded and installed on both sides of the lubricating oil box (2), and a first magnet (602) is arranged between the stator core (601).

2. The anti-demagnetization new energy permanent magnet motor according to claim 1, characterized in that: A mounting shaft disc (101) is fixedly installed inside the front cover (1), and the interior of the mounting shaft disc (101) is movably connected to the rotating shaft (3) via a bearing member. A liquid level window (201) is embedded and installed on the front side of the lubricating oil box (2), and a sealing plug is threadedly installed on the front side of the lubricating oil box (2).

3. The anti-demagnetization new energy permanent magnet motor according to claim 1, characterized in that: One end of the rotating shaft (3) is provided with equidistant snap-in grooves (301), the other end of the rotating shaft (3) is fixedly mounted with a tapered shaft (302), the outer side of the motor housing (4) is equidistantly mounted with heat sinks (401), and mounting brackets (402) are fixedly mounted on both sides of the bottom of the motor housing (4).

4. The anti-demagnetization new energy permanent magnet motor according to claim 1, characterized in that: A heat dissipation hole plate (503) is fixedly installed inside the rear cover (5), and through holes are evenly opened inside the heat dissipation hole plate (503).

5. The anti-demagnetization new energy permanent magnet motor according to claim 1, characterized in that: A cooling fan (502) is installed on the outer side of the rotating shaft (3) via a slot, and a clamping plate is fixedly installed inside the cooling fan (502).

6. The anti-demagnetization new energy permanent magnet motor according to claim 1, characterized in that: A conical limiting cover (504) is installed on the inner wall of the rear cover (5) via a carbon ceramic seat (505), and a heat dissipation window (501) is embedded and installed on the front side of the rear cover (5).

7. The anti-demagnetization new energy permanent magnet motor according to claim 1, characterized in that: A fixed mounting frame (7) is provided inside the motor housing (4); a shaft (701) is inserted and connected in the middle of the fixed mounting frame (7); a permanent magnet rotor (702) is fixedly connected to the outer side of the shaft (701); the outer side of the permanent magnet rotor (702) is connected to the stator (703); one end of the shaft (701) is fixedly connected to a driving gear column (704); and the outer side of the driving gear column (704) is meshingly connected to a driven gear column (705).

8. The anti-demagnetization new energy permanent magnet motor according to claim 7, characterized in that: One side of the driven gear column (705) is meshedly connected with a transmission gear column (706), one end of the transmission gear column (706) is provided with a second magnet (707), an electric roller is provided on the outer side of the second magnet (707), and a transmission shaft (708) is connected to the middle of one end of the fixed mounting frame (7).

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